package com.atguigu.java2;

public class A1StudentTest {

    public static void main(String[] args) {
        try {
            Student s = new Student();
            s.regist(-1001);
            System.out.println(s);
        } catch (Exception e) {
//			e.printStackTrace();
            System.out.println(e.getMessage());
        }
    }
}

class Student {
    private int id;

    public void regist(int id) throws Exception {
        if (id > 0) {
            this.id = id;
        } else {
//			System.out.println("您输入的数据非法！");

            //手动抛出异常对象
//			throw new RuntimeException("您输入的数据非法！");
//			throw new Exception("您输入的数据非法！");
            throw new MyException("不能输入负数");

            //错误的
//			throw new String("不能输入负数");
        }
    }

    @Override
    public String toString() {
        return "Student [id=" + id + "]";
    }
}